Poseidon's Warriors is a set of wargaming rules for large-scale naval actions between fleets of Classical galleys, from the Greek and Persian clash at the Battle of Salamis, to the Battle of Actium that decided the fate of Rome. With so many of these battles taking place around islands or in narrow channels and shallow waters, sneaky tactics and cunning maneuvers are a hallmark of the era's warfare. The rules use an integrated turn system to allow a commander to position ships to go in and ram without being rammed in return, or to employ feints and traps to tempt the enemy out of position and leave his ships vulnerable to a follow-up strike.

With data for ships throughout the period, rules for famous admirals, historical scenarios, a campaign system, and a brief historical summary for those who wish to refresh their memory of the era, Poseidon's Warriors offers everything players need to equip themselves for the battles and campaigns of the first great age of naval warfare.